Stock Based Compensation (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
0 Months Ended 6 Months Ended
Apr. 02, 2012
Jun. 30, 2012
Stock Based Compensation (Textual) [Abstract]    
Option vesting period 5 years  
Unrecognised stock-based compensation expense   2,670
Initial public offering [Member]
   
Stock Based Compensation (Textual) [Abstract]    
Common stock granted   310,000
Compensation cost of the options $ 2,811